Has the relationship between the Green Lanterns and the Green ever been thoroughly ex

I'm aware that Swamp Thing was once the White Lantern entity, and Earth-2 (New 52) explicitly linked Alan Scott's powers to the Green. But has it ever been explored in more detail? In the Golden Age, Alan's powers were directly related to Roadrunner email plant life--has any retcon ever placed Alan's powers closer to the Green Lanterns while keeping that plant elemental connection?